| 1. | Butterfly valve - potential pressure life test regulation
蝶阀.静压寿命试验规程 |
| 2. | D341x double flange butterfly valve - changmao
D341x型双法兰蝶阀- changmao |
| 3. | D343h centrifugal seal butterfly valve - changmao
D343h型法兰偏心蝶阀煤气阀- changmao |
| 4. | Ball valves , filters , motor butterfly valve , actuators
球阀，过滤器，电动蝶阀，伺服驱动 |
| 5. | Industrial valves - butterfly valves of thermoplastic materials
工业阀门.热塑性材料蝶阀 |
| 6. | D71x handle drive butterfly valve - changmao
D71x型手动蝶阀- changmao |
| 7. | Eccentric signal butterfly valve for water - supply
供水用偏心信号蝶阀 |
| 8. | The study of machining and assembly technology of butterfly valve
蝶阀加工及装配工艺的研究 |
| 9. | Industrial valves - metallic butterfly valves ; german version en 593 : 2004
工业阀门.金属蝶阀 |
